Two level inheritance with EJB?

[Anonymous]

Hi,
I am trying inheritance in EJB.

public class ABean implements EntityBean
{
        public void accept(AbstractVisitor v){}
}

public class BBean extends ABean implements EntityBean
{
        public void accept(AbstractVisitor v){}
}

Then I have AbstractVisitor class

public class AbstractVisitor
{
        public void visit(A a);
        public void visit(B b);

}

A, B are home interface objects and B inherits A.

I am getting compilation error when I call visit method from my main passing
reference to A.

Error:Incompatible type for method. Explicit cast needed to convert A to B

Any help will be appreciated.

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